EP0325189A1 - Rotative drum with a bearing - Google Patents

Rotative drum with a bearing Download PDF

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Publication number
EP0325189A1
EP0325189A1 EP89100667A EP89100667A EP0325189A1 EP 0325189 A1 EP0325189 A1 EP 0325189A1 EP 89100667 A EP89100667 A EP 89100667A EP 89100667 A EP89100667 A EP 89100667A EP 0325189 A1 EP0325189 A1 EP 0325189A1
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EP
European Patent Office
Prior art keywords
drum
base plates
holding elements
race
circumferential direction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89100667A
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German (de)
French (fr)
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EP0325189B1 (en
Inventor
Gerhard Dipl.-Ing. Kästingschäfer
Bernhard Dipl.-Ing. Peterwerth
Reinhard Dipl.-Ing. Körting
Johannes Dipl.-Ing. Auf Dem Venne
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ThyssenKrupp Industrial Solutions AG
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Krupp Polysius AG
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Publication of EP0325189A1 publication Critical patent/EP0325189A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/022—Arrangements of drives, bearings, supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/02—Bearings
    • F16C13/04—Bearings with only partial enclosure of the member to be borne; Bearings with local support at two or more points
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/22—Rotary drums; Supports therefor
    • F27B7/2206—Bearing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/22—Rotary drums; Supports therefor
    • F27B7/2206—Bearing rings
    • F27B2007/2213—Bearing rings mounted floatingly on the drum
    • F27B2007/2226—Bearing rings mounted floatingly on the drum the mounting comprising elements to maintain the ring between series of abutments

Definitions

  • the invention relates to a rotary drum with a race according to the preamble of claim 1.
  • a raceway attachment in which the base plates are welded to the drum shell, is known for example from DE-C 33 33 218. Since the casing of rotary drums is often exposed to high temperatures, and large thermal expansions can occur between the drum casing and the base plates of the bearing ring, the known design results in high stresses due to the thermal stresses in the weld seams that are added to the mechanical load, which the base plates also support connect the drum shell.
  • a rotary drum with a race is also known according to the preamble of claim 1.
  • the base plates are loosely arranged between the drum casing and the race, although there is no play between the furnace and the race in the operating state.
  • the holding elements serving to support the underlay plates in the circumferential direction are formed in this known embodiment as straight, elongated blocks.
  • the invention has for its object to design a race attachment according to the preamble of claim 1 so that even with large temperature differences between the race and drum shell a perfect fixation of the Race is guaranteed without undesirably high stresses, especially welds.
  • the loose washers enable the radial play to be approximately uniform over the entire circumference in the cold and warm operating condition of the rotary drum, so that larger temperature differences between the race and drum shell are possible without plastic deformation.
  • the base plates made of high-strength steel are able to absorb the high dynamic loads with permanent radial play.
  • the X-shaped retaining elements are designed in such a way that stress peaks in the critical weld seam start are avoided.
  • the X-shape of the holding elements also results in a desired large weld seam length.
  • the height of the holding elements is expediently chosen to be greater than the height of the base plates, so that a full system is ensured even with changing operating play.
  • the game provided in the race ring attachment according to the invention has no negative influence on the roundness of the drum shell, but allows the absorption of larger expansion differences due to temperature differences between the drum shell and the race compared to the previously known designs.
  • the risk of permanent constrictions in the drum jacket is significantly reduced.
  • Fig. 1 shows (in a detail) a plan view of the parts used to fasten a race L on a rotating drum. Only three teeth 1 of the race are shown, which are spaced apart on the inner circumference of the race.
  • the race is supported in the area between the teeth 1 on the drum jacket 2 via pads plates 3, which taper somewhat in the area of their axial ends 3a, 3b.
  • Wedges 4 are provided between the teeth 1 and the base plates 3 and can be clamped in the axial direction (arrow 6) by means of a clamping device 5.
  • the base plates 3 are arranged loosely in relation to the drum casing 2 and are supported in the region of their axial ends 3a, 3b in the circumferential direction (arrow 7) on retaining elements 8 which are X-shaped and in the region of their two inwardly curved longitudinal sides 8a, 8b are welded to the drum shell 2.
  • the two opposite end faces 8c, 8d of the holding elements 8 protrude in the central region in the circumferential direction (the edge regions of these end sides are set back in the circumferential direction), the base plates 3 being supported on this projecting region of the holding elements 8. In this way, the initial zones of the weld seams 9, via which the holding elements 8 are connected to the drum shell 2, are largely relieved of the forces introduced into the holding elements 8 by the base plates 3.
  • two backing plates 3 are arranged between successive teeth 1, which in the region of their two axial ends are supported in the circumferential direction on a holding element 8 common to both backing plates.
  • Fixing elements 10 which are welded to the drum shell 2, serve to secure the position of the base plates 3 axially.
  • rod-shaped supports 11 are also provided which rest at one end on the axial end faces of the teeth 1 and the other end of which is welded to the drum casing 2.
  • the sectional view according to FIG. 2 illustrates (on an enlarged scale) the conditions provided for the radial play in the raceway fastening.
  • an approximately uniform radial play s 1 is present over the entire circumference in the cold and warm operating state of the rotary drum. It is conveniently 1 to 3 ⁇ of the outer diameter of the drum shell 2 (when cold).
  • a radial play s2 between the Teeth 1 of the race L and the drum shell 2 are present.
  • This radial play s2 is appropriately 2 to 4 ⁇ of the outer diameter of the drum shell 2 (in the cold state).
  • the height of the wedges 4 is chosen to be smaller than the height of the base plate 3. In this respect there is expediently a height difference of 2 to 8 mm.
  • the height of the holding elements 8 (not visible in FIG. 2) is expediently greater than the height of the base plates 3, preferably by 10 to 50 mm, in order to ensure full support of the base plates 3 on the holding elements 8 even in the event of a changing operating game .

Abstract

The invention relates to a bearing fixing with spacers (3ab) arranged loosely in relation to the drum casing (2), there being between the spacers (3ab) and the bearing in cold and hot operating condition of the rotative drum a radial play, fixing elements (10) and supports moreover being connected to the drum casing (2) for axially securing the position of the spacers (3ab) and the bearing, and the spacers (3ab) being supported in the circumferential direction via X- shaped holding elements (9).

Description

Die Erfindung betrifft eine Drehtrommel mit Lauf­ring entsprechend dem Oberbegriff des Anspruchs 1.The invention relates to a rotary drum with a race according to the preamble of claim 1.

Eine Laufringbefestigung, bei der die Unterlags­platten mit dem Trommelmantel verschweißt sind, ist beispielsweise durch die DE-C 33 33 218 be­kannt. Da der Mantel von Drehtrommeln oft hohen Temperaturen ausgesetzt ist, wobei zwischen dem Trommelmantel und den Unterlagsplatten des Lauf­ringes große Wärmedehnungen auftreten können, ergeben sich bei der bekannten Ausführung hohe Beanspruchungen durch die zur mechanischen Be­lastung noch hinzukommenden thermischen Spannungen in den Schweißnähten, die die Unterlagsplatten mit dem Trommelmantel verbinden.A raceway attachment, in which the base plates are welded to the drum shell, is known for example from DE-C 33 33 218. Since the casing of rotary drums is often exposed to high temperatures, and large thermal expansions can occur between the drum casing and the base plates of the bearing ring, the known design results in high stresses due to the thermal stresses in the weld seams that are added to the mechanical load, which the base plates also support connect the drum shell.

Aus der Praxis ist weiterhin eine Drehtrommel mit Laufring entsprechend dem Oberbegriff des An­spruches 1 bekannt. Hierbei sind die Unterlags­platten lose zwischen dem Trommelmantel und dem Laufring angeordnet, wobei allerdings im Betriebs­zustand kein Spiel zwischen Ofen und Laufring vor­handen ist. Die zur Abstützung der Unterlagsplatten in Umfangsrichtung dienenden Halteelemente sind bei dieser bekannten Ausführung als gerade, läng­liche Klötze ausgebildet.From practice, a rotary drum with a race is also known according to the preamble of claim 1. The base plates are loosely arranged between the drum casing and the race, although there is no play between the furnace and the race in the operating state. The holding elements serving to support the underlay plates in the circumferential direction are formed in this known embodiment as straight, elongated blocks.

Der Erfindung liegt die Aufgabe zugrunde, eine Laufringbefestigung entsprechend dem Oberbegriff des Anspruches 1 so auszubilden, daß auch bei großen Temperaturdifferenzen zwischen Laufring und Trommelmantel eine einwandfreie Fixierung des Laufringes ohne unerwünscht hohe Beanspruchungen, insbesondere von Schweißnähten gewährleistet ist.The invention has for its object to design a race attachment according to the preamble of claim 1 so that even with large temperature differences between the race and drum shell a perfect fixation of the Race is guaranteed without undesirably high stresses, especially welds.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Zweckmäßige Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the characterizing features of claim 1. Appropriate embodiments of the invention are the subject of the dependent claims.

Im Unterschied zu der vorstehend erwähnten be­kannten Ausführung sind bei der erfindungsge­mäßen Lösung auf den Unterlagsplatten keine Schweißverbindungen erforderlich. Dadurch können hochfeste Stähle mit geringer Schweißbarkeit ein­gesetzt werden.In contrast to the known embodiment mentioned above, no welded connections are required on the base plates in the solution according to the invention. This means that high-strength steels with low weldability can be used.

Die losen Unterlagsplatten ermöglichen im kalten und warmen Betriebszustand der Drehtrommel ein über den gesamten Umfang annähernd gleichmäßiges Radialspiel, sodaß größere Temperaturdifferenzen zwischen Laufring und Trommelmantel ohne plasti­sche Verformungen möglich sind. Die Unterlags­platten aus hochfestem Stahl sind dabei in der Lage, die hohen dynamischen Belastungen bei per­manentem radialen Spiel aufzunehmen.The loose washers enable the radial play to be approximately uniform over the entire circumference in the cold and warm operating condition of the rotary drum, so that larger temperature differences between the race and drum shell are possible without plastic deformation. The base plates made of high-strength steel are able to absorb the high dynamic loads with permanent radial play.

Die X-förmig ausgebildeten Halteelemente sind so gestaltet, daß Spannungsspitzen im kritischen Schweißnahtanfang vermieden werden. Die X-Form der Halteelemente ergibt ferner eine erwünschte große Schweißnahtlänge.The X-shaped retaining elements are designed in such a way that stress peaks in the critical weld seam start are avoided. The X-shape of the holding elements also results in a desired large weld seam length.

Die Höhe der Halteelemente wird zweckmäßig größer als die Höhe der Unterlagsplatten gewählt, sodaß auch bei wechselndem Betriebsspiel eine volle An­lage sichergestellt ist.The height of the holding elements is expediently chosen to be greater than the height of the base plates, so that a full system is ensured even with changing operating play.

Das bei der erfindungsgemäßen Laufringbefestigung vorgesehene Spiel hat keinen negativen Einfluß auf die Rundheit des Trommelmantels, erlaubt je­doch gegenüber den bisher bekannten Ausführungen die Aufnahme größerer Dehnungsdifferenzen durch Temperaturunterschiede zwischen Trommelmantel und Laufring. Die Gefahr von bleibenden Einschnürun­gen des Trommelmantels ist wesentlich gemindert.The game provided in the race ring attachment according to the invention has no negative influence on the roundness of the drum shell, but allows the absorption of larger expansion differences due to temperature differences between the drum shell and the race compared to the previously known designs. The risk of permanent constrictions in the drum jacket is significantly reduced.

Von besonderem Vorteil ist auch, daß die Einlei­tung der in Umfangsrichtung wirkenden Kräfte von den Unterlagsplatten auf die Halteelemente nicht in unmittelbarer Nähe des Anfangs der Schweißnäh­te erfolgt, sondern über den in Umfangsrichtung vorspringenden mittleren Bereich der Halteelemen­te, was eine erwünschte Entlastung des Schweiß­nahtanfanges mit sich bringt.It is also particularly advantageous that the introduction of the forces acting in the circumferential direction from the base plates onto the holding elements does not take place in the immediate vicinity of the beginning of the weld seams, but rather via the central region of the holding elements projecting in the circumferential direction, which brings about a desired relief of the beginning of the weld seam .

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung schematisch veranschaulicht. Es zeigen

  • Fig. 1 eine Teilaufsicht auf die zur Befestigung eines Laufringes auf einer Drehtrommel dienenden Teile,
  • Fig. 2 einen Schnitt längs der Linie II-II der Fig.1.
An embodiment of the invention is illustrated schematically in the drawing. Show it
  • 1 is a partial view of the parts used to fasten a race on a rotating drum,
  • Fig. 2 shows a section along the line II-II of Fig.1.

Fig. 1 zeigt (in einem Ausschnitt) eine Aufsicht auf die zur Befestigung eines Laufringes L auf einer Drehtrommel dienenden Teile. Von dem Lauf­ring sind dabei lediglich drei Zähne 1 darge­stellt, die am Innenumfang des Laufringes mit Abstand voneinander angeordnet sind.Fig. 1 shows (in a detail) a plan view of the parts used to fasten a race L on a rotating drum. Only three teeth 1 of the race are shown, which are spaced apart on the inner circumference of the race.

Der Laufring stützt sich im Bereich zwischen den Zähnen 1 auf dem Trommelmantel 2 über Unterlags­ platten 3 ab, die sich im Bereich ihrer axialen Enden 3a, 3b etwas verjüngen.The race is supported in the area between the teeth 1 on the drum jacket 2 via pads plates 3, which taper somewhat in the area of their axial ends 3a, 3b.

Zwischen den Zähnen 1 und den Unterlagsplatten 3 sind Keile 4 vorgesehen, die über eine Spannvor­richtung 5 in axialer Richtung (Pfeil 6) gespannt werden können.Wedges 4 are provided between the teeth 1 and the base plates 3 and can be clamped in the axial direction (arrow 6) by means of a clamping device 5.

Die Unterlagsplatten 3 sind gegenüber dem Trom­melmantel 2 lose angeordnet und stützen sich im Bereich ihrer axialen Enden 3a, 3b in Umfangs­richtung (Pfeil 7) an Haltelementen 8 ab, die X-förmig ausgebildet sind und im Bereich ihrer beiden nach innen gekrümmten Längsseiten 8a, 8b mit dem Trommelmantel 2 verschweißt sind.The base plates 3 are arranged loosely in relation to the drum casing 2 and are supported in the region of their axial ends 3a, 3b in the circumferential direction (arrow 7) on retaining elements 8 which are X-shaped and in the region of their two inwardly curved longitudinal sides 8a, 8b are welded to the drum shell 2.

Die beiden gegenüberliegenden Stirnseiten 8c, 8d der Halteelemente 8 springen im mittleren Be­reich in Umfangsrichtung vor (die Randbereiche dieser Stirnseiten sind demgegenüber in Umfangs­richtung zurückgesetzt), wobei sich die Unter­lagsplatten 3 an diesem vorspringenden Bereich der Halteelemente 8 abstützen. Auf diese Weise sind die Anfangszonen der Schweißnähte 9, über die die Halteelemente 8 mit dem Trommelmantel 2 verbunden sind, von den durch die Unterlags­platten 3 in die Halteelemente 8 eingeleiteten Kräften weitgehend entlastet.The two opposite end faces 8c, 8d of the holding elements 8 protrude in the central region in the circumferential direction (the edge regions of these end sides are set back in the circumferential direction), the base plates 3 being supported on this projecting region of the holding elements 8. In this way, the initial zones of the weld seams 9, via which the holding elements 8 are connected to the drum shell 2, are largely relieved of the forces introduced into the holding elements 8 by the base plates 3.

Wie aus der Zeichnung ersichtlich ist, sind zwischen aufeinanderfolgenden Zähnen 1 jeweils zwei Unterlagsplatten 3 angeordnet, die sich im Bereich ihrer beiden axialen Enden an je einem für beide Unterlagsplatten gemeinsamen Halteele­ment 8 in Umfangsrichtung abstützen.As can be seen from the drawing, two backing plates 3 are arranged between successive teeth 1, which in the region of their two axial ends are supported in the circumferential direction on a holding element 8 common to both backing plates.

Zur axialen Lagesicherung der Unterlagsplatten 3 dienen Fixierungselemente 10, die mit dem Trom­melmantel 2 verschweißt sind.Fixing elements 10, which are welded to the drum shell 2, serve to secure the position of the base plates 3 axially.

Zur axialen Lagesicherung des Laufringes sind ferner stangenförmige Abstützungen 11 vorgesehen, die mit ihrem einen Ende an den axialen Stirn­seiten der Zähne 1 anliegen und deren anderes Ende mit dem Trommelmantel 2 verschweißst ist.For the axial securing of the position of the race, rod-shaped supports 11 are also provided which rest at one end on the axial end faces of the teeth 1 and the other end of which is welded to the drum casing 2.

Im Betrieb ist bei unterschiedlichen Wärmedeh­nungen eine Relativbewegung zwischen den Unter­lagsplatten 3 und dem Trommelmantel 2 in Richtung der Pfeile 12 möglich (die Fixierungselemente 10 gestatten ein ausreichendes Spiel). Auch in Um­fangsrichtung ist durch das zwischen dem Haupt­teil der beiden Unterlagsplatten vorhandene Spiel 13 der freie Ausgleich von Wärmedehnungen mög­lich. Die besonders kritischen Schweißnähte 9 der X-förmigen Halteelemente 8 sind spannungs­mäßig wirksam entlastet.In operation, with different thermal expansions, a relative movement between the base plates 3 and the drum casing 2 in the direction of the arrows 12 is possible (the fixing elements 10 allow sufficient play). Free compensation of thermal expansion is also possible in the circumferential direction due to the play 13 present between the main part of the two base plates. The particularly critical welds 9 of the X-shaped holding elements 8 are effectively relieved of stress.

Die Schnittdarstellung gemäß Fig. 2 veranschau­licht (in vergrößertem Maßstab) die bezüglich des Radialspieles in der Laufringbefestigung vor­gesehenen Verhältnisse. Zwischen den aus hoch­festem Stahl geringer Schweißbarkeit bestehenden Unterlagsplatten 3 und dem Laufring L ist im kalten und warmen Betriebszustand der Drehtrommel ein über den gesamten Umfang annähernd gleich­mäßiges Radialspiel s₁ vorhanden. Es beträgt zweckmäßig 1 bis 3 ‰ des Außendurchmessers des Trommelmantels 2 (im kalten Zustand).The sectional view according to FIG. 2 illustrates (on an enlarged scale) the conditions provided for the radial play in the raceway fastening. Between the base plates 3 made of high-strength steel with low weldability and the race L, an approximately uniform radial play s 1 is present over the entire circumference in the cold and warm operating state of the rotary drum. It is conveniently 1 to 3 ‰ of the outer diameter of the drum shell 2 (when cold).

Weiterhin ist ein Radialspiel s₂ zwischen den Zähnen 1 des Laufringes L und dem Trommelmantel 2 vorhanden. Dieses Radialspiel s₂ beträgt zweck­mäßig 2 bis 4 ‰ des Außendurchmessers des Trommelmantels 2 (im kalten Zustand).Furthermore, a radial play s₂ between the Teeth 1 of the race L and the drum shell 2 are present. This radial play s₂ is appropriately 2 to 4 ‰ of the outer diameter of the drum shell 2 (in the cold state).

Wie Fig. 2 erkennen läßt, ist die Höhe der Keile 4 kleiner als die Höhe der Unterlagsplatte 3 gewählt. Zweckmäßig besteht insoweit ein Höhenunterschied von 2 bis 8 mm.As can be seen in FIG. 2, the height of the wedges 4 is chosen to be smaller than the height of the base plate 3. In this respect there is expediently a height difference of 2 to 8 mm.

Die Höhe der (in Fig. 2 nicht sichtbaren) Halte­elemente 8 ist zweckmäßig größer als die Höhe der Unterlagsplatten 3, und zwar vorzugsweise um 10 bis 50 mm, um auch bei einem wechselnden Betriebs­spiel eine volle Anlage der Unterlagsplatten 3 an den Halteelementen 8 zu gewährleisten.The height of the holding elements 8 (not visible in FIG. 2) is expediently greater than the height of the base plates 3, preferably by 10 to 50 mm, in order to ensure full support of the base plates 3 on the holding elements 8 even in the event of a changing operating game .

Claims (5)

1. Drehtrommel mit am Umfang angeordnetem Laufring (L), der an seinem Innenumfang mit Abstand voneinander vor­gesehene Zähne (1) aufweist und sich auf dem Trommel­mantel (2) über gegenüber dem Trommelmantel (2) lose angeordnete Unterlagsplatten (3) abstützt, die in Umfangsrichtung an mit dem Trommelmantel (2) ver­schweißten Halteelementen (8) anliegen, wobei in Umfangsrichtung zwischen den Zähnen (1) und Unter­lagsplatten (3) Keile (4) vorgesehen sind und zwischen aufeinanderfolgenden Zähnen (1) jeweils zwei Unter­lagsplatten (3) angeordnet sind, die sich im Bereich ihrer beiden axialen Enden (3a, 3b) an je einem für beide Unterlagsplatten gemeinsamen Halteelement (8) in Umfangsrichtung abstützen, wobei die Unterlags­platten (3) an den beiden gegenüberliegenden Stirn­seiten (8c, 8d) der Halteelemente (8) anliegen und die die beiden Stirnseiten miteinander verbindenden Längsseiten (8a, 8b) der Halteelemente mit dem Ofen­mantel (2) verschweißt sind,
gekennzeichnet durch folgende Merkmale: a) zwischen den aus hochfestem Stahl geringer Schweißbarkeit bestehenden Unterlagsplatten (3) und dem Laufring ist im kalten und warmen Betriebs­zustand der Drehtrommel ein über den gesamten Um­fang annähernd gleichmäßiges Radialspiel (s₁) vor­handen; b) mit dem Trommelmantel (2) sind zur axialen Lage­sicherung der Unterlagsplatten (3) dienende Fixierungselemente(10) sowie zur axialen Lage­sicherung des Laufringes dienende Abstützungen (11) verbunden; c) die Halteelemente (8) sind - in Umfangsrichtung betrachtet - X-förmig ausgebildet, wobei die Stirnseiten (8c, 8d) der Halteelemente (8) im mittleren Bereich in Umfangsrichtung vor­springen und sich die Unterlagsplatten (3) an diesem vorspringenden Bereich der Halteelemente (8) abstützen. 1.Turning drum with a circumferentially arranged race (L), which has teeth (1) spaced apart on its inner circumference and is supported on the drum shell (2) by means of washers (3) which are loosely arranged with respect to the drum shell (2) Bearing circumferentially on holding elements (8) welded to the drum jacket (2), wedges (4) are provided in the circumferential direction between the teeth (1) and base plates (3) and two base plates (3) are arranged between successive teeth (1) which are supported in the circumferential direction in the area of their two axial ends (3a, 3b) on a respective holding element (8) common to both underlay plates, the underlay plates (3) on the two opposite end faces (8c, 8d) of the holding elements (8) and the longitudinal sides (8a, 8b) of the holding elements connecting the two end faces are welded to the furnace jacket (2),
characterized by the following features: a) between the existing of high-strength steel low weldability washers (3) and the race in the cold and warm operating condition of the rotating drum an approximately uniform radial play (s₁) available over the entire circumference; b) with the drum jacket (2) serving for the axial securing of the base plates (3) serving fixing elements (10) and for the axial securing of the bearing supports (11); c) the holding elements (8) - viewed in the circumferential direction - are X-shaped, the end faces (8c, 8d) of the holding elements (8) projecting in the central region in the circumferential direction and the base plates (3) on this projecting region of the holding elements (8) support. 2. Drehtrommel nach Anspruch 1, dadurch gekennzeichnet, daß das Radialspiel (s₁) zwischen den Unterlags­platten (3) und dem Laufring (L) 1 bis 3 ‰ des Außendurchmessers des Trommelmantels (2) im kalten Zustand beträgt.2. Rotary drum according to claim 1, characterized in that the radial play (s₁) between the base plates (3) and the race (L) is 1 to 3 ‰ of the outer diameter of the drum shell (2) in the cold state. 3. Drehtrommel nach Anspruch 1, dadurch gekennzeichnet, daß zwischen den Laufringzähnen (1) und dem Trommel­mantel (2) ein Radialspiel (s₂) zwischen 2 und 4‰ des Außendurchmessers des Trommelmantels (2) im kalten Zustand vorgesehen ist.3. Rotary drum according to claim 1, characterized in that between the race teeth (1) and the drum shell (2) a radial play (s₂) between 2 and 4 ‰ of the outer diameter of the drum shell (2) is provided in the cold state. 4. Drehtrommel nach Anspruch 1, dadurch gekennzeichnet, daß die Höhe der Keile (4) kleiner, vorzugsweise 2 bis 8 mm kleiner, als die Höhe der Unterlagsplatten (3) ist.4. Rotary drum according to claim 1, characterized in that the height of the wedges (4) is smaller, preferably 2 to 8 mm smaller than the height of the base plates (3). Drehtrommel nach Anspruch 1, dadurch gekennzeichnet, daß die Höhe der Halteelemente (8) größer, vorzugs­weise 10 bis 50 mm größer, als die Höhe der Unter­lagsplatten (3) ist.Rotary drum according to claim 1, characterized in that the height of the holding elements (8) is greater, preferably 10 to 50 mm, greater than the height of the base plates (3).
EP89100667A 1988-01-18 1989-01-16 Rotative drum with a bearing Expired - Lifetime EP0325189B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3801231 1988-01-18
DE3801231A DE3801231A1 (en) 1988-01-18 1988-01-18 TURN DRUM WITH RING

Publications (2)

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EP0325189A1 true EP0325189A1 (en) 1989-07-26
EP0325189B1 EP0325189B1 (en) 1992-04-01

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ID=6345453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100667A Expired - Lifetime EP0325189B1 (en) 1988-01-18 1989-01-16 Rotative drum with a bearing

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EP (1) EP0325189B1 (en)
DE (2) DE3801231A1 (en)
ES (1) ES2030217T3 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO1992008939A1 (en) * 1990-11-19 1992-05-29 O&K Orenstein & Koppel Ag Arrangement for securing a ball race to the jacket of a rotating tube
WO1995034792A1 (en) * 1994-06-16 1995-12-21 F.L. Smidth & Co. A/S Rotary drum suspended within live-ring
JP2021025720A (en) * 2019-08-07 2021-02-22 明和工業株式会社 Continuous heat treatment device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4312508A1 (en) * 1993-04-16 1994-10-20 Kloeckner Humboldt Deutz Ag Fastening a race on the curved surface of a rotary tube
DE10256758A1 (en) 2002-12-05 2004-06-17 Khd Humboldt Wedag Ag Fastening a race on the jacket of a rotary tube
WO2022101208A1 (en) * 2020-11-10 2022-05-19 Thyssenkrupp Industrial Solutions Ag Rotary drum, in particular a rotary kiln with a rotary tube and a running ring arranged about same
BE1028785B1 (en) * 2020-11-10 2022-06-07 Thyssenkrupp Ag Rotary kiln with a rotary kiln and a raceway arranged around it

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FR2089034A5 (en) * 1970-04-02 1972-01-07 Polysius Ag
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DE3320236A1 (en) * 1983-06-03 1984-12-06 Krupp Polysius Ag, 4720 Beckum Rotary drum
DE3333218A1 (en) * 1983-09-14 1985-03-28 Krupp Polysius Ag, 4720 Beckum Rotary drum

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DE3132578A1 (en) * 1981-08-18 1983-04-28 Krupp Polysius Ag, 4720 Beckum TURN DRUM
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DE3443734A1 (en) * 1984-11-30 1986-06-05 A. Friedr. Flender Gmbh & Co Kg, 4290 Bocholt Drive device for a tumbling mill
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FR2089034A5 (en) * 1970-04-02 1972-01-07 Polysius Ag
DE3320122A1 (en) * 1983-06-03 1984-12-06 Krupp Polysius Ag, 4720 Beckum Rotary drum
DE3320236A1 (en) * 1983-06-03 1984-12-06 Krupp Polysius Ag, 4720 Beckum Rotary drum
DE3333218A1 (en) * 1983-09-14 1985-03-28 Krupp Polysius Ag, 4720 Beckum Rotary drum

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992008939A1 (en) * 1990-11-19 1992-05-29 O&K Orenstein & Koppel Ag Arrangement for securing a ball race to the jacket of a rotating tube
WO1995034792A1 (en) * 1994-06-16 1995-12-21 F.L. Smidth & Co. A/S Rotary drum suspended within live-ring
AU680369B2 (en) * 1994-06-16 1997-07-24 F.L. Smidth & Co A/S Rotary drum suspended within live-ring
US5733115A (en) * 1994-06-16 1998-03-31 F.L. Smidth & Co. A/S Rotary drum suspended within live-ring
JP2021025720A (en) * 2019-08-07 2021-02-22 明和工業株式会社 Continuous heat treatment device

Also Published As

Publication number Publication date
DE58901055D1 (en) 1992-05-07
DE3801231A1 (en) 1989-07-27
ES2030217T3 (en) 1992-10-16
EP0325189B1 (en) 1992-04-01

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